Owner`s manual

Adjusting the Force(s):

Now that your Force(s) are all connected let’s get them playing! First, turn your main system

on and switch the Force(s) on.

What we want to do is sum the outputs of the main speakers with the subwoofer(s) for as

smooth a transition as possible. The result will be an extended bass response. Many people

actually prefer an exaggerated, overly powerful bass. You can easily accomplish this by setting the

subwoofer level at a higher than normal level.

For those who want the most accurate and natural bass:

-If you are using a subwoofer output to Theater in connection you will use the bass management

features of your receiver or processor. Refer to your owner's manual for details. In this mode you will

set the Force crossover frequency dials to 250Hz. Adjust phase to give the highest output level.

For connections other than Theater direct:

-The low-frequency response of your main speakers must be considered. Crossover frequency

should be set as low as possible. Lower crossovers will allow the subwoofer to audibly “disappear”

and placement is less critical. The deeper your main speakers go, the easier it will be to get a

seamless match. If your main speakers are a ported (vented) design, you will probably get best

results with the vent plugged. A cloth or towel will work fine. Just stuff it so that you no longer get

air pressure coming from the vent when the speaker is playing.

-Start with the Force level turned down and both crossover frequencies set to 35Hz. Play music with

some solid and deep bass. It’s a lot easier to start out with music that has a fairly constant bass.

Turn the level up until the low bass fills in naturally. You are looking for bass that goes deeper, not

necessarily louder. Experiment with moving the crossover frequency dials upward. At first, move

both controls up an equal amount. Move them up until the bass is full, without any missing notes. In

some rooms and with some speakers, it may help to adjust crossover B higher in frequency than

crossover A. Adjust up or down until the subwoofer best matches the cutoff of your main speakers.

The most natural results will be with the lowest crossover point that doesn’t leave a “gap” in the

response.

Other System Considerations

If the rest of your system does not work properly or is not correctly connected you will not get the

best performance from your system. To eliminate problems we recommend the following:

I. Use the finest associated components you can afford. Turntable, cartridges, pre-

amps, amplifiers, (receivers) and cables all have profound impact on the sound of

your system. Accurate speakers let more detail through. You will hear more of the

beauty of the music, but flaws in your system and/or source material may be more

obvious. Any good audio system is made up of matched components. You wouldn’t

use bargain recap tires on a new Ferrari, and you shouldn’t use inferior components

with a high quality speaker. Your ACI Force(s) performs like subwoofers costing far

more. Keep this in mind when selecting the rest of your system.

II. Know your source material. People often blame their audio gear for poor recordings.

A great number of popular recordings are of inferior sound quality. Unfortunately this

applies to records, tapes, DVDs and CDs. There are more good quality recordings

available now than just a few years ago, but poor recordings with rolled off low bass,